Curtis Instruments AC F4-A User Manual

7 — DIAGNOSTICS AND TROUBLESHOOTING
Curtis AC F4-A Motor Controller – August 2020 Return to TOC
pg. 168
Table 18 Fault Code Troubleshooting Chart, cont’d
FLASH
CODE
FAULT NAME
(Curtis Integrated Toolkit™)
POSSIBLE CAUSES SET/CLEAR CONDITIONS FAULT ACTIONS
2-3
0x23
Undervoltage Cutback
Undervoltage_Cutback_Active
0x2121
Fault Type(s): 1
1. Batteries need recharging.
Controller is performance limited
at this voltage.
2. Battery parameters are misadjusted.
3. Non-controller system-drain on
battery.
4. Battery resistance too high.
5. Battery disconnected while driving.
6. Blown B+ fuse or main contactor did
not close.
7. See Programmer » System Monitor
menu » Controller » Currents »
UnderVoltageCutback.
8. See Programmer » System Monitor
menu » Controller » Capacitor
Voltage.
Set: Capacitorbank
voltage dropped below the
UnderVoltageCutback limit with
the FET bridge enabled.
Clear: Bring the capacitor
voltage above the controller’s
UnderVoltageCutback limit.
Reduced drive torque.
Fault Action:
None, unless a fault action
is programmed in VCL.
2-4
0x24
Overvoltage Cutback
Overvoltage_Cutback_Active
0x2131
Fault Type(s): 1
1. Normal operation. Fault shows that
regen braking currents elevated
the battery voltage during regen
braking. Controller is performance
limited at this voltage.
2. Battery parameters are
misadjusted.
3. Battery resistance too high for
given regen current.
4. Battery disconnected while regen
braking.
5. See Programmer » System Monitor
menu » Controller » Currents »
OverVoltageCutback.
6. See Programmer » System Monitor
menu » Controller » Capacitor
Voltage.
Set: The controller’s capacitor
bank voltage exceeded the
OverVoltageCutback limit with
the FET bridge enabled.
Clear: Bring controller’s
capacitor voltage below the
OverVoltageCutback limit.
Reduced brake torque.
Note: This fault is declared
only when the controller is
running in regen.
Fault Action:
None, unless a fault action
is programmed in VCL.
2-5
0x25
Ext 5V Supply Failure
Ext_5V_Supply_Failure_Active
0x2531
Fault Type(s):
1 = 5 V Supply’s voltage is out-
of-range
2 = 5 V Supply’s current is out-
of-range
1. External load impedance on the
+5V supply is too low.
2. See the System Monitor » Outputs
menu:
External_5V_Supply,
Ext_5V_Current.
.
Set:
(1) The 5V Supply is outside
5V±10%.
(2) The current is outside
limits dened by:
Ext_5V_Supply_Min
Ext_5V_Supply_Max
Clear: Reset Controller, or
Re-set using VCL variable
Ext_5V_Output_Enable
Disables the 5 V Supply
Fault Action:
None, unless a fault action
is programmed in VCL.
2-6
0x26
Ext 12V Supply Failure
Ext_12V_Supply_Failure_Active
0x2532
Fault Type(s):
1 = 12 V Supply’s voltage is
out-of-range
2 = 12 V Supply’s current is
out-of-range
1. External load impedance on the
+12V supply is too low.
2. See Programmer » System Monitor
menu » Outputs:
External_12V_Supply,
Ext_12V_Current.
Set:
(1) The 12 V supply (pin 23)
is outside 12 V ± 15 %
(2) The current is outside the
limits dened by:
Ext_12V_Supply_Min
Ext_12V_Supply_Max
Clear: Reset Controller. Or
Reset using VCL variable
Ext_12V_Output_Enable.
Disables the 12 V Supply
Fault Action:
None, unless a fault action
is programmed in VCL.

Curtis Instruments AC F4-A Specifications

General

Brand	Curtis Instruments
Model	AC F4-A
Category	Controller
Language	English